Which is entirely my point, running 2+2 instead of 4 car units unnecessarily duplicates the facilities. You have two catering cupboards, two megabogs, four cabs... Yet with a four car unit you'd have one catering cupboard (though I'd strip that out entirely), one megabog, two cabs, but you'd gain two small bogs.
Having one megabog and two small bogs is more useful for a person with a disability than having just two megabogs, because the extra retention tank means that the toilets won't fill as quickly.
They don't do commuting well either. All of that space wasted by the cupboard. Nor can they cope with stopping services on low speed rural branch lines. They were designed to be a Jack-of-all-trades, master-of-none.
I miss the Mk3s. Almost all table seating, they had a massive luggage rack at each end of the carriage. I never had to ask people to fold prams down, luggage didn't block aisles or vestibules, and families didn't have trouble finding seats together - they could sit as a family, just like they ought to. Was a great crowdbuster for the commuters too, I reckon that I once got more than 500 passengers on.
I think that we're working on the basis that two coach trains are inappropriate for almost all work and should not have been ordered in the first place. Capacity issues on long distance services ought to be solved by adding more carriages, not by cramming the passengers even closer together.
I do believe that the executives at TfW do recognise that many procurement decisions made by the KeolisAmey were mistakes. This is why for example the Llandudno-Manchester services that were planned to be three car units are now often diagrammed as four coaches, especially on Saturdays, I gather that James Price saw the situation at Prestatyn for himself and said that it couldn't continue). Unfortunately making wholesale changes to units at this late stage is incredibly difficult and expensive.
We're not talking 20 minutes. 1hr20mins of standing is common.